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Jerkmate
https://numlookupapi.com/
Phone Number Lookup & Validation API | Numlookupapi.com
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https://vatcheckapi.com/
VAT Lookup & Validation API | Vatcheckapi.com
Vatcheckapi is a free VAT lookup API. It provides a well designed REST-API that returns all data in JSON-format.
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https://cabforum.org/2025/11/12/ballot-sc-091-sunset-3.2.2.5.3-reverse-address-lookup-validation-proposal-of-new-dns-based-validation-using-persistent-dcv-txt-record-for-ip-addresses/
Ballot SC-091: Sunset 3.2.2.5.3 Reverse Address Lookup Validation, proposal of new DNS-based...
Voting Results Certificate Issuers 24 votes in total:
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https://numverify.com/
Numverify API | Numverify API | Phone Number Validation & Phone Lookup API
Numverify API is a powerful JSON API providing international and national phone number validation, carrier, location, and line type lookup for developers.
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https://www.nslookup.io/dlv-lookup/
DLV Lookup – DNSSEC Lookaside Validation Checker
Find DNSSEC lookaside validations (DLV DNS records) for any domain or website. Check if the DLV records have been configured correctly.
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https://www.textmagic.com/carrier-lookup/
Carrier lookup and number validation - Textmagic
Mar 4, 2026 - Improve your SMS marketing efforts and remove inaccurate numbers from your database. Validate phone numbers instantly with our carrier lookup tool.
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https://dns-lookup.com/email
Email Deliverability Checker - SPF, DKIM & DMARC Validation | DNS Lookup | DNS Lookup
Check email authentication records including SPF, DKIM, and DMARC. Improve email deliverability and prevent spoofing. Free email security checker.
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